Question

I am trying to make a page that displays articles in a database but it is to be organised in by category.

The categories are stored in a table categories with id and category as its fields/
The articles are stored in a table articles with its different fields for various information about the article.

The code I have:

<?php

$sql = "SELECT * FROM `categories`";
$query = mysql_query($sql) or die("Could not get CATEGORIES ".mysql_error());

while($category = mysql_fetch_array($query)){

$cat = $category['category'];

$sql = "SELECT * FROM `articles` WHERE `category` = '$cat'";
$query = mysql_query($sql) or die(mysql_error());
$articles = mysql_fetch_array($query);

$size = count($articles);

echo $size;

}   

?>

Results that I expect are a list of each category, then underneath each category, the number of articles with that category.

Some help would be much appreciated.

Thanks 😀

Answer 1

Try this one… may be this is what you are looking for. We can also find the same result using single mysql query.

$sql = "SELECT * FROM `categories`";
$query = mysql_query($sql) or die("Could not get CATEGORIES ".mysql_error());

$result = array();
while($category = mysql_fetch_array($query)){

$cat = $category['category'];

$sql = "SELECT count(*) as numberOfArticles FROM `articles` WHERE `category` = '$cat'";
$query2 = mysql_query($sql) or die(mysql_error());

$articles = mysql_fetch_array($query2);
$category['numberOfArticles'] = $articles['numberOfArticles'];
$result[] = $category;

}   

print_r($result);